Accumulator operating mechanism



Aug. 25, 1931. w. w. LASKER 1,820,078

ACCUMULATOR OPERATING MECHANISM I le y ,.1925 2 Sheets-Sheet 1 l l lINVENTOI? WITNESS fi /63%? @pu fire/MEX g1 Wax/I'm mm,

g- 25, 1931- w. w. LASKER 1,820,078

ACCUMULATOR OPERATING MECHANISM Filed y 1925 2 Sheets-Sheet 2 INVENTOI?William ll lms/rez;

W1 TNESS Patented Aug. 25, 1931 1 820 078 UNITED STATES PATENT OFFICEWILLIAM w. LASKER, or BROOKLYN, NEW YORK, ASSIGNOR, BY MEsNEAssIGNMENTs, To REMINGTON nANn me, on NEW YORK, N. Y., A CORPORATION orDELAWARE AooUMULATon ornRATrNe MECHANISM Application filed July 23,1925. Serial No. 45,577. i

The present invention relates generally to the link 12 from oneoperating position to adding machines but more particularly to theanother according to requirements it is conaccumulating mechanismoperated by a sec nected by a slot 22 and pin 23 to a motion tor such asemployed in printing tabulators. transmitting link 24 which has itsopposite V Some of the objects of the present invenend pivoted to a rockarm 25. A spring 26 55 tion are to provide an'improved means for isconnected between the arm 25 and the link controlling the operation ofan accumulat- 12 to maintain the normal relation between ing and totaltaking mechanism; to provide the parts. The foregoing structure is fullymeans for causin apositive meshing relation described in Patent N 0.1,388,271 and need between the pinions of the accumulator mechnot herebe further explained except to menso anlsm and their sectors whereby anaccurate tion that the accumulator link 12 as here rolling in of anaccumulation or an accurate shown is a two part flexible link instead ofa rolling out of a total is accomplished; to prorigid link as in theaforesaid patent and forms vide an accumulator mechanism having a thesubject matter of a pending patent apmeasure of flexibility wherebyabnormal plication. 05

strains may be relieved without damage; to The accumulator pinion 11 1scarried by a provide means including a toggle mechanism shaft 27supported by an arm 28 mounted for in place of a rigid cam operateddevice for swinging movement about a fixed pivot 30 controllingaccumulator pinions; and to pro in such a manner that movement of thearm vide other improvements as will hereinafter 28 in one directionbrings the pinion 11 to "0 appear. meshing relation with the rack 81 ofthe In the accompanying drawings, Fig. l're'psector 19, and in theopposite dlrectlon br ngs resents a fragmental detail of a printingtabthe pinion 11 out of such meshing relation. ulator having anaccumulator operating For the purpose of actuat ng the arm 28 mechanismembodying one form of the pres o glve the desired plnion act10n,'a re ty ent invention and showing the sector and Short 11111! 32 1S P1V0ted at1 end on the accumulator pinion in disengaged position; Shaikh 27 at ltsOther 911(1 h h y and Fig. 2 represents the same with the parts 1 p -3 2m 34: "Vhlch 1S plvoted moved to bring the accumulator pinion into on aP 35 of i d 2 p p w engagement ith th Sec/ton y, In order to transmtmotion to the arm 80 Referring to the drawings, those portions 34 1t 5cpnnected y a Pi 37 to one end f a i ti t b lat hi are believed of theaccumulator link 1145 0 that as the latnecessary to n understanding ofthe/Present ter 1s moved 111 one direction or the other inv nti areshown d consist f a type a corresponding rock ngofthe arm 34 takes 8Sector 10 an accumulator Pinon 11 an place. to shift the pinion ascircumstances rcmm. The link 32, and arm 34 as connected cumulator link12 and opei atlng mechanism q 21 t t, for the machine comprisin a cranksector form a 3; e Stmc P m S Kalb ened osition tohold the pinion 11fiimlv in 18, mounted on the main actuating shaft 1 Yb 14 and arran edto en a e a pivoted crank lts l 9 W len m m f 9n b a position to removethe pinion from meshing sector engaging lever 15. This lever 15 pom-tiontransntlts mot 10n to a actuatmg Y To accelerate the toggle change fromposi- Whlch (amines at opposlte' i tion to position, a spring 38 isstretched be- 18 tor engagement respectlvely Wlth. tween a pin 39, onthe arm 34, and a pin 40 the upper and lower recesses 20 and 2 of on aside extension 11' of the short link-32. the accumulator 111115 dependmgupon his extension l1 extends at an angle to the whether the link 12 isin its raised or lowered i k 32 SO that h th toggle i t i h OperatingPosition 30 that link 12.15 1 cned or broken'the spring 38 is stretchedand ra ed at t e p oper pr dete ed im s in relieved .as the fulcrum33'crosses th -sprin the operation of the machine. For shifting andhence a shifting of the toggle fulcrum either to pinion meshing orunmeshing position brings the tension of the spring 38 into play to givea snap action as soon as the fulcrum passes to a side of it. Anytendency of the toggle to collapse or move beyond prescribed limits isprevented by the provision of a stop pin 42 carried by a rigid arm 43and entering an opening 44 in the arm 4L3. The opening 4:4 is soproportioned that when the arm 34: reaches the necessary limit of itsmovement in either direction, the stop 42 will be engaged and preventfurther move ment.

In the operation of the machine the sector 10, when swinging to typesetting position, is out of mesh withthe pinion 11 and the latter andits operating parts are then in the position of. Fig. 1 but before thereturn movement of the sector begins the pinion 11 is thrown into meshwith the sector to roll in an accumulation. This shifting of the pinion11 takes place automatically and by the correct timing of the partswhich move the accumulator link 12. The movement of the accumulator link12 is in the direction to straighten the toggle link 32 and arm 34 sothat the spring 38 finally snaps the parts to the desired meshedrelation. The unmeshing of the parts takes place through movement of theaccumulator link 12 in theopposite direction and the break in the toggledraws the pinion 11 to the position shown in Fig. 1. here a total is tobe rolled out of the accumulator link 12 is moved to neutral position topermit the accumulator pinions to remain in mesh with the sectors duringthe forwardly stroke. If the accumulator is to remain clear,the link 12will be lowered as usual to engage the slot 21 with the pinion 18 todisengage the accumulator from the sectors before the return stroke ismade.

It will now be apparent that an accumulator control mechanism has beenprovided which is simple and effective to control the meshing andunmeshing of accumulator pinions with rack sectors for registering,accumulating and taking of totals. By the present invention cam operatedcontrols heretofore employed have been dispensed with and consequentlyrigid non-giving action is avoided and the use of adjustable detents nolonger necessary. The necessary adjustments required and acompanying theuse of cams, detents and latches haveheretofore made skilled operation avery material factor in the use of machines of the character here underconsideration and where through wear or strains, due to rigidpositioning of the accumulator pinions, the proper meshing does not takeplace, the machine must remain idle while repair and skilledreadjustment are made. Disadvantages of this character are entirelyobviated bythe present means for meshing and unmeshmg the accumulatorpinions and a flexibility of control obtained which functionsautomatically to take up and compensate for wear, to maintainadjustment, and to relieve abnormal strains' lVhile only a single formis shown in which said rack sector,and means for accelerating thestraighteningand breaking of said toggle structure. I

2. In a device of the character stated, the combination of a racksector, an accumulator pinion, means including a toggle structure formeshing and unmeshing said pinion with said rack sector, and a springbetween parts of said toggle and movable from one side of the togglefulcrum to the other.

3. In a device of the character stated, the combination of a rack sectorof a computing machine, an accumulator, pinion, a pivoted arm carryingsaid pinion, a toggle between said arm and a fixed point adapted in itsstraightened position to limit the extent of meshing of the pinion withthe rack sector, and operating mechanism for the machine including meansfor straightening and breaking said toggle at predetermined times in theoperation of said mechanism whereby said pinion is caused to mesh andunmesh with said rack sector. I

4. In a device of, the character stated, the combination of a racksector, an accumulator pinion, a pivoted arm carrying said pinion, anarm pivoted to a fixed point, a link connecting said arms and forming atoggle with said second arm, a spring connected at one end to saidsecond arm, means on said link for attaching the other end of saidspring and offset with respect to the fulcrum of said toggle, and meansfor straightening and breaking said toggle whereby said pinion'is'caused to mesh-and unmesh with said rack sector. 7

5. In a device of the character stated, the combination of a racksector, an accumulator pinion, means including a toggle for meshing andunmeshing said pinion with said rack 'sect0r,'a spring connected betweensaid toggle parts, to actuate the toggle toward either of its limitsafter it has moved past the ceriter toward said limits, and means tolimit the movement ofsaid toggle in either direction.

6. In a device of the'character stated, the combination of a racksector, an accumulator pinion, means including a toggle structure formeshing and unmeshing said pinion with said rack sector, said togglebeing in straightened position for meshing the pinion with the racksector, and a spring adapted to be brought into action at apredetermined po sition of the toggle for urging it toward and holdingit in straightened position.

Signed at New York, in the county of New York, and State of New York,this 6th day of July, 1925.

WILLIAM W. LASKER.

